Source Critique 1

The Fishbone Diagram – How to Use It Effectively
Six Sigma Online. (2008, October 27). The Fishbone Diagram – How to Use It Effectively. Retrieved from http://www.sixsigmaonline.org/six-sigma-training-certification-information/articles/the-fishbone-diagram-%E2%80%93-how-to-use-it-effectively.html

Ishikawa Diagrams

Purpose

This web article describes Ishikawa diagrams for management professionals from the perspective of Six Sigma quality management systems.

Strengths and Weaknesses
According to Six Sigma Online, Ishikawa diagrams have the following strengths and weaknesses:

Strengths:

• Detailed exploration of the relationships between a variety of causes and effects.
• Effective tool for the Six Sigma phases of Measure and Improve.

Weaknesses:

• Requires input from as many individuals as possible.
• Complex processes may require several diagrams.

Description
The article recommends the following steps for developing an Ishikawa diagram:

1. Identify the problem and write it down on the right side of the diagram.
2. Draw a horizontal line to the left to create the “backbone” of the diagram.
3. Brainstorm causes and depict each as a diagonal “rib” along the backbone.
4. Analyze causes to identify root causes.
5. Develop a plan of action to produce desired outcomes.

Uses
It describes Ishikawa diagrams as effective tools for identifying the root causes of defects and building consensus among team members when developing a plan to resolve quality issues.


Sources Cited
This article was developed by a for-profit organization focused on Six Sigma certifications and cites no outside sources. The organization does have subject matter expertise; however, it would increase credibility with outside references.


Most Informative
I found this source informative and to-the-point for business professionals with easy-to-follow instructions for creating a cause-and-effect diagram. Additionally, it is part of a series of training articles available for free.


Source Author
It was written by an unnamed member of the Six Sigma Online/Aveta Business Institute training staff for education purposes.

Source Reliability

High Credibility


Critique Author

Kenda Puchalski, kenda.puchalski@gmail.com, “Mercyhurst College, Erie PA, Advanced Analytic Techniques Course,” 19 December 2010.